Improvement in paper-cutting machines



Je UMCG-549 tluitd ,30 new -MMW eea-wmet GEORGE H. SANBORN, OE NEW YORK,N. Y.

Letters Patent N0. 84,307, lated November 24, 1868.

IMPROVEMENT PAPER-CUTTING MACHINES.

` The Schedule referred to in these Letters Patent and making part ofthe same.

To all whom 'it 'may concern. 1

Be it known that I, GEORGE H. SAXBORN, of the city, county, and State ofNew York, have invented a new and improved Paper-Cuttin g Machine; and'Ido hereby declare, the following to be a full and corre-ct descriptionofthe same, reference being had to the accompanying drawings, in which-Figure 1 is a front elevation of the machine, and Figure 2 is an endelevation of the saine.

The same letter marks the saine part in both figures. The nature of theinvention consists in devices for .operating and checking the knife, andfor giving it both an inclined and a draw cnt, as hereinafter more fullyset forth.

In the accompanying drawingsa. marks the frame ofthe machine, to theupper part of which the knife c is suspended, in proper guiding-Asuspension of the knife by the swinging arms secures i a draw ont, also,in the ordinary way.Y

"he knife-stock extends out beyond the frame, as seen in iig. l, and hasa slot in its end for the reception of an adiustable block, d, which canbe moved' up and down in it by means of the set-screws s s.- Pivoted tothis nut is the rod p, by which the knife is operated. A rock-shaft, e,is hung in brackets, y g, attached to the lower part of the frame, .andis operated by the lever q, attached to its front end by its head, j'.To this shaft is fastened the librating-arm h, the lower branch 'ofwhich is forked to receive the lower end of connect ing-rod p, which ispivoted to it. On the inner side of the upper end of the arm h., isattached a piece of rubber, r, adjusted by set-screw s', the office ofthe rubber being to check the descent of the knife, and keep it frombeing dulled by cutting into the table m when at the end of its stroke,

In rear of arm h, onrock-shaft e, is attached the segmental arm i, whichhas a grooved arc on its free end. To this is fastened a cord, n, whichpasses up over pulley f, and has a weight, l, attached to its end, asshown. The oice of this weight is to raise the knife after thecompletion of its downward stroke.

The operation of the machine is as follows:

The paper to be cut is placed on the table m, the knife c being in itshighest position, as shown in red lines in fig. 1. The lever q is thendepressed, when the knife enters-the paper at an angle with its surface,and, by a draw ut,`descends through it. Just as the knife reaches thetable, the rubber -r comes into contact with the end ofthe frame, andchecks its further descent. The' lever q being then released, the weightl draws up the knife to its initial position, ready for a repetition ofthe operation.

Having thus fully described my invention, I

What I claim, and desireto secure by Letters Patent, is

l. The combination of the knife c, and the swinging I arms b b', whenthe latter are arranged, relatively to each other, in the mannerdescribed, for the purpose specied.

2. The arrangement and combination of the rod 1J, arm` h, rock-shaft e,and lever q, as and for the purpose desciibed.

3. The rubber lr, attached and adj usted as describedl for the purposeof arresting theniotion of the knife, as set forth.

The above specification of my said invention signed and witnessed atBoston, this 22d day of September,- A. D. 1868.

GEO. H. SANBORN.

Witnesses; i

ALFRED HATHAWAY,

CHAs'. F. STANSBURY.

